diff options
Diffstat (limited to 'drivers/base/platform.c')
| -rw-r--r-- | drivers/base/platform.c | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 04451da003a6b..3518207131145 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -58,6 +58,41 @@ int platform_get_irq(struct platform_device *dev, unsigned int num) } /** + * platform_get_resource_byname - get a resource for a device by name + * @dev: platform device + * @type: resource type + * @name: resource name + */ +struct resource * +platform_get_resource_byname(struct platform_device *dev, unsigned int type, + char *name) +{ + int i; + + for (i = 0; i < dev->num_resources; i++) { + struct resource *r = &dev->resource[i]; + + if ((r->flags & (IORESOURCE_IO|IORESOURCE_MEM| + IORESOURCE_IRQ|IORESOURCE_DMA)) == type) + if (!strcmp(r->name, name)) + return r; + } + return NULL; +} + +/** + * platform_get_irq - get an IRQ for a device + * @dev: platform device + * @name: IRQ name + */ +int platform_get_irq_byname(struct platform_device *dev, char *name) +{ + struct resource *r = platform_get_resource_byname(dev, IORESOURCE_IRQ, name); + + return r ? r->start : 0; +} + +/** * platform_add_devices - add a numbers of platform devices * @devs: array of platform devices to add * @num: number of platform devices in array @@ -103,7 +138,8 @@ int platform_device_register(struct platform_device * pdev) for (i = 0; i < pdev->num_resources; i++) { struct resource *p, *r = &pdev->resource[i]; - r->name = pdev->dev.bus_id; + if (r->name == NULL) + r->name = pdev->dev.bus_id; p = NULL; if (r->flags & IORESOURCE_MEM) @@ -308,3 +344,5 @@ EXPORT_SYMBOL_GPL(platform_device_register_simple); EXPORT_SYMBOL_GPL(platform_device_unregister); EXPORT_SYMBOL_GPL(platform_get_irq); EXPORT_SYMBOL_GPL(platform_get_resource); +EXPORT_SYMBOL_GPL(platform_get_irq_byname); +EXPORT_SYMBOL_GPL(platform_get_resource_byname); |